Weight placing and proving attachment.



G. G. LI. E.

L. VOLAND'.

WEIGHT PLACING AND PROVING ATTACHMENT.

APPLICATION FILED APR. I1. |918.

' Patented Apr. 22, 1919.

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/y Geo .5 I 2 fafa /NVENTRS r e 6. Vo/and UNITED sTATEs vPATENT OEEIOE.

GEORGE G. VOLAND AND EMIL L. VOLAND, OF NEW ROCHELLE, NEW YORK.

WEIGHT PLACING AND PROVING- ATTACHMENT.

Application filed April 17, 1918.

To all whom t may concern:

Be it known that we, GEORGE Gr. VOLAND and EMIL L. VOL-AND, both citizens of the United States, and residents of New Rochelle, in the county of festchester and State of New York, have invented a new and Improved lVeight Placing and Proving Drawings.

Figure 1 is a front View of a scalebeam and weight placing and indicating attachment therefor;

Fig. 2 is a detail view On an enlarged scale, showing in section the rocking beam and weight-placing attachment therefor, the section being taken as on the line 2-2 1n Fig. 1;

`Fig. 3 is a detail view on an enlarged scale showing fragments Of the rocking beam, weight-placing and proving attachment, and a weight shown in the operation of Ibeing placed;

Fig. t is a top view of the same;

Fig. 5 is a perspective view of one of the balancing weights with which the scales 1s equippe j Description.

As seen in the drawings, the scalebeam 10 is pivotally mounted on a knife blade 11 and supported by a pillar 12. Rigidly held on the pillar 12 is the weight-placing and proving attachment. The attachment consists primarily in a frame, the end bars 13 and 14 of which are connected by guide rods 15, and the framing members 16 and 17, the latter being provided with calibrations 18, said calibrations corresponding with the calibrations 19 on the scalebeam 10. The bar 13 provides a sliding 'bearing for the rider carrier 20. One end of the rider carrier 2O has a knurled head 21 and is supported at the opposite end in bearings formed in sliding brace 22. The rider car- Specication of Letters Patent.

Patented Apr. 22, 1919.

Serial No. 229,072.

rier 2O is held in permanent relation to the brace 22, by set collars 23 and 24.

The brace 22 is slidably mounted on the guide rods 15, being adapted to be moved lengthwise thereof by the rider carrier 20. Adjacent the brace 22, the rider carrier 20 1s perforated to permit the extension therethrough of a rider hook 25.

As seen best in Fig. 2 of the drawings, the rider hook 25 has the hooked extremity 26 sufficiently extended to engage an eyelet 27 of the movable rider 28. Adjacent the eX- tremity 26, the rider hook 25 has a guard 29.

The brace 22 has permanently attached thereto a short section Vernier plate 30. As seen best in Fig. 8 of the drawings, the vernler plate 30 is juxtaposed to be read in cooperation with the calibrations 18 on the framing member 17. The zero point on said vernier plate is disposed in the same vertical plane as the center of the rider hook 25. The rider carrier 20 is adjusted in its retracted position by set screws 3l, so that the Zero mark on the vcrnier plate 30 coincides with the zero mark on the calibrations 18 on the framing member 17 and with the zero mark on the scalebeam 10.

When using a scales constructed in accordance with the present invention, the attendant engages the knurled head 21 of the carrier 20 and vrocks the carrier to lift the hook 25 from the position shown by solid lines in Fig. 2 to the position shown by broken lines in the same ligure. The hook 26 engages the eyelet 27 of the rider 28 to lift the same from the scalebeam 10. The carrier is now shifted to the position indicated by the approximate estimate of the Weight. The usual method of advancing or retracting the rider lengthwise of the scalebeam is employed.

With highly sensitive scales, the correct balance often is obtained when the rider rests between two of the fractional divisions of the scale or calibrations 19. Heretofore the division of the division has been assumed by the person operating the scales. In accurate work this is unsatisfactory and it is to overcome the Objection that the vernier plate 30 is used. When, now, the rider is placed between the divisions of the calibration 19, the decimal division of the location with reference to the division on the calibration 19 is ascertained by reading the vernici' 30 on the calibration 18. The usual method of Vernier reading is employed. Hence the person operating the scales isA provided Vwith means for assuming zaccuratelj)1 the balancing Weight.

While there has been shown a Vernier plate having calibrations of ten divisions,` it will be understood that this may be amplified and a larger number of divisions may be employed if desired.

l. In a weighing scales, agraduate'd scalebeam Vadapted for the support of balance members superposed thereon a weight carrier frame having Va scale of graduations duplicating the graduations on said scale beam a lcarrier mounted.v on said i frame for placing saidbalancemembers, said carrier having a Vernier member readable in correspondence with ythe fgraduations on said scalebeam for indicating the 'fractions ofla division in said gra'duations where said balance` members rest.'

Q. ln a balance scales; a. rocking scalebeam having a scale lgraduation adapted to support balance members when superposed thereon; a Vsecond scale V'duplicating the first-mentioned scale in Vexposed relation thereto; a vrocking carrierslidably mounted between said graduations; and a Vernier plate iXedly connectedto said carrier to move lengthwise of said *scale in correspondence with vthe movement of said carrier, said Vernier having' graduationsnto be read in conjunction with the second-mentioned graduations, the calibrations on said Vernier plate registering` with the Zero markings of' both of said graduations.

' 3. Inabalance scales; a rocking scalebeam having a scale of graduations adaptedcto support balance members Iwhen superposed thereon; a-second scale duplicating the-firstmentioned scalein eXposedrelation thereto; a rocking carrier slidablymounted between said graduations; a Vernier `plate vfiredly connected to said carrierik to move lengthwise ofA said' scale in correspondence with -the movement of said carrierfsai'd Vernierhaving graduations to be Vread A, in vconjunction isomers ,zero .adjustmentofsaid carrier and Vernier plate.

`ln-a balance scales; a rocking scalebeam having a scale of graduations adapted `to support balance members when superposed thereon; a second scale duplicating the lijst-mentioned scale in ,exposed relation thereto a rocking vcarrier slidabl'y mounted 'between said graduations; Va Vernier plate iXedly connectedto said carrier Atofmove lengthwise of said Yscale `in correspondence with the linovementrof said carrier, said Vernier plate' having graduationsyto be read in conjunction with `the second-mentioned graduations, the calibrations on said vernier plate registeringwith the zero markings on both ofsaid graduations; and means for `Varying the zerol adjustment 01E-said carrier arid-Vernier plate, said means embodyi-ng a. brace slidablyY mounted` in guides, said brace furnishing abearing for* said carrier, and adjustable positioning. collars "fixedly mounted on said carrierat .opposite .sides of said brace.

5. In aweighingsGa-leS; a rocking beam having a scale ofsgraduations and adapted to support in superposed relation thereto, movable balancing Vmembers -ajguidejfra-me mounted in'juxtaposed relation'to saidY rockingifbeam, said'guide frame having a second scale graduatedi'in correspondence with the scale on said Ibeam; Va carrier slidably mounted `in "said frame ffor movement lengthwise thereof; and. means providedxon said carrier A'for engagingto liftan'd transfer Vsaid balance members; :a 1lVernier plate connected* with said carrierand disposed in juxtaposed' relation to 4tlie-'graduations '.on said frame to register therewith andtobe read. thereon IVfor `iirc'licatingthe fractional division offtheplace oa-ny ofthe Ibalance members.

GERGE "G. VOLAND. EMIL L. VOLAND.

Copies of this patent may be obtained for"ve;cent| each, vpymchlressing theaffommmionerintakten,

Washington-intim i 

